“# .[13-9]% ? 4 #.! D=
%/ U# $* 1 $ ;4 5/ i# /- & FA $ 9 < A C D A 1 .4 % % <- A
! 4 ;4 5/ * j # ;
< L# : A 1 “# $ ;4 5/ .= A H E N# : ’ = 4 B- # “# A <
$ – # $* <%- 4%EA 1 “# 4 .[2 -13 ]4 <
4 # $* :4 : $ #. ! _ A = “# $ .= _ A & /Z- # 2 3 1
$ C D A 1 $ ! “# 4
-” * ( )* 4 * $ H & ZUA :. (#.H)
:* 4 / ! $ [# =< U % 4 ” EA .% ;4 5/ =) 3 4 k !

.= 5 3 # $*
# ll2- ll/! ll ;%ll2’ + ll0 1 &Zll
%l 4 i# l/- M #4 J < = pYU .% 4 clYU $ “# l =l ?-%l AM l :% * .% ;4 5/ i# /- & FA 4 ” / Ay . C ” 5 < A2 :$ %l A 9’ / ! x L X “#
4) B3 ( J 4 / ) 5 F :4 .H =’ ) l* l F =l? G) C3 (4 lD/- _ 4 10 <
< pH %J ) D2 ( / ) 0/1 ” * : # 3
426415377033

A =100− =X100 (− U0 × ×I X100) (1)
I0Ux
f 2A – 2- 4 [ ! $ Ux U0 L “# 4 – 2- 4 [ ! +% q 2 Ix I0 *
‘ A A X A #4 J .%- 4 u 9A *
# 2 ‘ < A .% /^ W # :% * _ 4 2A oI_ v @ ;% ./ + ,
” C Varian-SpectrAA220 % (AAS)
.(7 % (FE-SEM) -% & ^D
U – /Z) w ZZ . – + , = Y#
+ , – – ./ 4 : D – D / ! 0 4 ;44 z < “/^-4 # 2 1 * – D – D < .= j 3 < “3 : & J/ < K j A K#UA
;% 4U ! * F 4 ) J/- . H : # %# %
$ – Fe2+: # 3 * F < – $ .[1] =
F : 4 cYU =’ ” * + 5) nF %# % nF- $ – BH4- ;% < 3 : # *
#$ + 3 < – 4 ;4 .H #%
:[2]=
Eo =−0.44 V Fe2+ +2e− =Fe (1)
Eo =−0.83 V 2H O2 +2e− =H2 ↑+2OH −
(2)
(3)
BH4− +4OH − =BO2− +2H O2 +2H2 ↑+4e−
Eo =−1.67 V
(4) < (3) (2) < – ‘ < A /-
:% #$ +
BH4− +2HO BO2 =2− +4H2 ↑ (4)
$ (5) )4 E %- A ” * :# 3
:%#* = % (3) (1) < – ‘ < A
(5)
BH4− +2Fe2+ +4OH − =2Fe BO+ 2− +2H O2 +2H2 ↑
! (6) )4 E $ . – – “# 4 &ZUA

:% <
BH HO B OH4− + 2 = +− + 2.5H2 ↑ (6)
# 2 # 3 < 4 &J/^ )4 E “# ( )* & ZUA N# :* Z2 %- 4 J/^ J .=H D 4 TESCAN-MIRA3

12 3 & / 45( 16 $7
4 * $ H & ZUA A 5/ / ! 4 / ! .%- 4 0 A Fe-B ( )* –
4 C D A 1 3 @ 4 ;% ;4 5/ x L
X C D A x @ .= ;% ;44 : U- 1 %_
:4 : (2) L
Taguchi −Design L: N (nk ) (2)
4%EA N C D A x @ 4 2- L L “# 4 b/ 4%EA k b/ x L 4%EA n # $* “# 4 .[4 2]% ( / ! 4%EA) % #* H 4
4 4 4 _ FL / ! C < _: * $ 3 @ < 4 % ‘ L9 % E/ B# A [# B! L9 4 %- / % E/ B# A 4 %- / 1 X ! “# 4 .%#4 D # 2 %_ 4 xL) 34 4%EA : * x L / ! 2A & <
< ) 3 4 .4 $ – # $* 81 E# ( /! : A
.44 < # $* 9 4%EA “# C D A 1

23 & 4
l l ;% ” EA W) X # $* 9 4%EA
X l l :% * %4 f- % E/ B#A
;%#4 3 %_ 4 < – D : 2 .% 9 F (1) L u l i# l/- : 4 * $ H % 4 “# AM 4 (ANOVA) 8 , ) ( < = * 4 %- / 1 B- # . ) -* 4 : D – D & ’ 0 A : A :* $ ;4 5/ B- # & FA .4 < 4 Z 2’ :%
+ 0 :4 4E : 4 < pYU = _ % 2A % .
Z * & FA 4 ;4 /^D – D =
4 %- / & FA u i# /- (4) %_ .[2]4
.% 4 : U- :* x L & ’ ANOVA
* F =? G 4 ;% U < – D : 2
=< U %4 ‘ A A < 4 ” * : #
: 4 0 A “# AM % 4 35/28 % 4 55/31 B- # =9^- _ A ” {2 .% /^ 4 / !
KL 4 F-table ^# J (4) %_ 4 (F =9^-)
=9^- %J D < /Z- “# <, %4 97/5 4 2/’
%- / %_ 4 ;% pYU %J $ B- #
& ’ :* ID 0 A ;% 4 : U- % A A < % /- “# : A = i #/- D% < ! .= 4 E x L “# 4 =? G / !

4 * & ” 1 . l l ! C D lA 3 @ = 2 – # ! 3 l? 2 # l $* f l – ; l2 l N# 4 i# /-
” l EA l l/! _ A N#
: U- ;% f – ! /- (5) %_ .= ;% =l) 3 4 l< %l ! (3) L X .% 4 l .= l %l 4 96/7 l :% * % 4
” l EA l N# % # A # $* f- X ” 2
BlZ# El 1 l! i# l/- 2 &Z .=H D f- . – ;%
< %#4 D ;% U .% 4 : U- N# 4 – 2 % l 4 100 l l :% * % 4 =) 3 4
.4 3 @ ! | LA 4 /- “# < % l< 4 % % 4 3/3 4 %3 4 4 * L “#
.= C D A 1 ! # < ;% 4 : U-
:(3)
Y opt = + − + − + − +T (Ai T ) (Bi T ) (Ci T ) (Di −T

) nnnnn
% [email protected] $ .[1]4$ -” * * C D A #$* $ ;% * = % i# /- 4 2 * $ H % 4 < %#4 D ;% U =^Y- / ! -% C + bA ” * : # 3 F :4 .H =’
F 1.# =’ A #.H /9) .= / %-
< [email protected] ;% < 3 F ” * : # 3 K F Z2 f%’ < f – : $
4 4 (6) (5) L $ ;% & ZUA ” * A
/9) .= * ( )* D &Z f%’ :* /- < =^ – o L :% C . – < -M @ : $
;% & ZUA +, :% % ^< :% =4 < C
.= 4 % ! 4 ” * A ? D _ , 5- < “# _ A
;% U 4 4 M 4 $ – Z9 & ZUA
& ZUA 8- [# :’ 4 < < %#4 D
% 4 =? G + bA ” C .4 < &2’ =) 3 4 Fe2+ =? G #.H < 44 : U- :% *
.=H # < ;% & ZUA * $ H %4 3 <
$ – Fe2+: # 3 < =5D : A 8 4 _ A .= BH4- ;% < 3 %J $ cYU =? G
# $* “# 4 ;% < 3 F =? G :4 = 0
< % /H D ?- 4 . H : # ;% < 3 ) =9^-
.%#4 D & ZUA A * $ H =9^- “# #.H 4 (6) (5) < _ A . – pH 0 4 4 pH < < =H D /- : A 3 < (5) < A ) & X < NF
B % ) A =2 (6) < A < Fe % ) A =2
0 . – N# “# 4 pH %J #.H .4 A
“# 4 % ?- /9) .= 4 ZE
. H ” * % ) A 4 EA %J =) 3
=) 3 “# 4 .= 7 pH %J 4 < 4 4 4 _ ( )* N# 4# ;% &ZUA . H ” * :
“# A :* 4 < %#4 D )4 EA -” * *
.% & ZUA * $ H %4

l3 l* l F =? G .4 ?-% C D A 3 @ $
l l< l 4 %l 4 55/31 =< Ul ” * : # l / ! : 4 0 A “# AM % 4 35/28 =< U C ” 5 < c YU “/H D ?- 4 .% -4 4 A2 + l l l / ! l x Ll ” l/ Ay .
4) B3 ( J 4 / ) 5F :4 .H =’) l* l F =l? G) C3 (4 lD/- _ 4 10 <
pH %lJ ) D2 ( l/ ) l l 0/1 “l * : l# 3 l?/- 4 /- =) 3 4 .% ” EA (7 <
l * %l 4 100 $ . – % # A : $* 4 % 4 96/7 3/3 4 %l3 4 D ;$%- L < = 4 =# Z3 :% .4 l C D A 1 ! # < ;% 4: U- % 4 ll< 44 : Ull- Ull ll- /Z) w Zll Z # cllA
;% & ZUA / – – 100 #$ ;$%- . # + , $ cF
+ , – l- ‘l < A l2A oIl_ l v @ i# /- .=
$ ” W- l [email protected] l < 44 : U- Fe-B* ( )* .= ;% & ZUA ” * -$ %4 89
N# 4 k! 9F
” lE A l N# l Di Ci Bi Ai L “# 4
= % i# /- &< q 2 T # $* &< 4%EA n ;%
.= ;% *
3 &Z 4 . – U – /Z) w Z Z # cA $ .% Fe-B * ( )* + , – – ;% 4 : U + + , < %#4 D ;% U FE-SEM # cA
.%-% & ZUA / – – 100 #$ ;$%- < 9# JA ;% & ZUA ( )* + , :4 .# – – * & )4
+% /- 4 ;4 M ^ + , ; # KL
” C .%- 4 :% ; D* 82 A &# 2A 2A oI_ v @ . – ‘ < A 4 ” * % 4 ” EA
2A oI_ . ) -* i# /- .=H D f – + , – – 4 4 .44 : U- ” * -$ % 4 % 4 89 :.

( 5
+ , – l- ./ l l N# l ” EA ! “# 4

;4 5/l # 2 3 1 Fe-B* ( )*
Refrences
1- Y. Chen, “Chemical Preparation and Characterization of Metal-Metalloid Ultrafine Amorphous Alloy Particles”, Catalysis Today, Vol. 44, pp. 3-16, 1998.
< A%3 .r } Y .q |@ – .o -2 Ni-Sn – 4 * ( )* % ) A N# ” EA” ;4 5/ Z – Z $ ( )* 1 f – / A ~3 4 “2 – /U # 2 ” C “C D A 1 $ : # D /Y# 2 ’ “2 – ( ) / ” %
.1389 : * 451 -438 d =E ’ ; WU-4
W. H. Wang, C. Dong and C. H. Shek, “Bulk Metallic Glasses”, Materials Science and Engineering R, Vol. 44, pp. 45–89, 2004.
H. Habazaki, “Corrosion of Amorphous and Nanograined Alloys”, Shreir’s
Corrosion, Vol. 3, pp. 2192-2204, 2009.
R. Babilas and R. Nowosielski, “Iron – Based Bulk Amorphous Alloys”, Archives of Materials Science and Engineering, Vol. 44, pp. 5-27, 2010.
J. Abenojar, F. Velasco, J. M. Mota and
M. A. Martinez, “Preparation of Fe/B Powders by Mechanical Alloying”, Journal of Solid State Chemistry, Vol. 177, pp. 382-388, 2004.
7- J. Saida, “The Formation of
Nanostructured Materials by Consolidating Ultrafine Amorphous Alloy Particles
Prepared by Chemical Reduction”, Materials Science and Engineering, 179/A, Vol. 180, pp. 577-581, 1994.
J. Jiang, I. Dezsi, U. Gonser and X. Lin,
“A Study of the Preparation Conditions of Fe-B Amorphous Alloy Powders Produced by Chemical Reduction”, Journal of NonCrystalline Solids, Vol. 124, pp. 139-144, 1990.
S. Linderoth and S. Morup, “Chemically Prepared Amorphous Fe-B Particles: Influence of pH on the Composition”, Journal of Applied Physics A, Vol. 67, pp. 4472-4474, 1990.
J. Shen, Z. Li, Q. Wang and Y. Chen,
“Chemically Prepared Fe–B Ultrafine
Amorphous Alloy Particles: Influence of
/6.
the Way of Mixing Reactants”, Journal of Materials Science, Vol. 32, pp. 749-753, 1997.

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اینجا کلیک کنید

J. Shen, Z. Li, Y. Fan and Y. Chen,
“Chemically Prepared Fe-B Ultrafine Amorphous Alloy Particles: Influence of the Reaction Time on the Properties”, Journal of Solid State Chemistry, Vol. 106, pp. 493-500, 1993.
J. Hu, Y. Fan and Y. Chen, “Preparation and Characterisation of Ultrafine Amorphous Alloy Particles”,
Journal of Applied Physics A, Vol. 68, pp. 225-229, 1999.
12- J. Rivas, M. A. Lopez, M. G. Bonome,
R. J. Duro and J. M. Greneche,
“Production and Characterization of Fe-B Amorphous Particles”, Journal of Magnetism and Magnetic Materials, Vol. 122, pp. 1-5, 1993.
$ ” ! . !4 _ .X ;4$ 2E . -13 1 8 % ^< + , – – ;$%- 0 & ’
-11 d 3 ; 2 2 % _ “# – 4 “C D A
.1391
. >( ? @. $ 4 AB $ 1 C- $-B -1 =
3 KL 2 KL 1 KL /!
1 5 10 mlit/minF :4 .H =’ :A
10 20 30 0C< 4 :B
0/1 0/5 1 2+
mol/litFe F =? G :C
9 7 5 < pH %J 😀
.45( D-.
L9 %- 8 $& -2 = <
pH ” * : # F =? G
mol/lit < 4
0C
F :4 .H =’ mlit/min # $*
5 1 30 10 1
7 0/5 20 10 2
9 0/1 10 10 3
9 0/5 30 5 4
5 0/1 20 5 5
7 1 10 5 6
7 0/1 30 1 7
9 1 20 1 8
5 0/5 10 1 9
.12 3 & =
5 E $ $ > ’ ( F -3 = 9 8 7 6 5 4 3 2 1 # $*
82/94 65/13 78/17 74/81 85/94 68/53 89/24 80/45 47/80 :% * %4

.1 6 4″ $-B 5 E $ $ 1 F $J – 1 HI
. ANOVA -. H L& M – -4 = QT F 8 QRS 8 * % $ P 5( $-B > -.
– – – – – =L >,U QV$. :A 1
35/28 19/43 242/49 484/99 2 4″ :B 2
55/31 29/89 373/09 746/18 2 2+ Fe =L QW X :C 3
1/75 1/91 23/89 47/78 2 4″ pH Y 😀 4
7/65 1 12/48 24/97 2 Pooled (A) @Z
100%4 ≈ 1303/92 8 P
F-table (97.5%) =39
.12 3 & 16 $7 M – N . $ 1 6 4 5( O ” # $ $ ($ -5 =
QT F @. @. [ F & $- B [ F &
1/65 2 A2 =L >,U QV$. :A
7/56 3 B3 4″ :B
9/68 3 C3 2+ Fe =L QW X :C
3/04 2 D2 4″ pH Y 😀
74/77 45( M – ]
96/7 ” # $ W- –

.12 3 & 16 $7 ” # $ ,-“. $ / $B ]) $_& – 2 HI

.12 3 & 16 $7 ” # $ ,-“. $ Fe-B ’( )( * + 5 FE-SEM $_& – 3 HI


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